APA (7th ed.) Citation

JB, P. (2009). Copyright protection profits. American Libraries, 40(4), 9.

Chicago Style (17th ed.) Citation

JB, Post. "Copyright Protection Profits." American Libraries 40, no. 4 (2009): 9.

MLA (9th ed.) Citation

JB, Post. "Copyright Protection Profits." American Libraries, vol. 40, no. 4, 2009, p. 9.